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K3484-1 / Frontier™ 400X (Perkins®)

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Excellent, all-around welder/generator capable of up to 400 amps of DC multi-process welding, 120/240 VAC single phase, and 240 VAC three phase auxiliary power. Integrates a bright, durable 7" digital user interface screen for advanced features. Powered by a 24.7 hp Perkins® 403F-15T diesel engine and includes patented Chopper Technology® and CrossLinc® Technology.



  • SMAW (Stick).
  • FCAW (Flux-Cored).
  • GMAW (MIG).
  • GTAW (TIG).
  • CAC-A (Arc Gouging).


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More Information
  • Full Job-Site Versatility – Offers up to 400 amps (IEC rated at 325 amps) of welding current to tackle numerous welding and carbon arc gouging applications. Includes six optimized CC and CV modes, plus advanced modes to support pulsed TIG, pulsed MIG, STT®, and mechanized equipment.


  • All Day Auxiliary Power – Provides up to 11 kW of continuous three-phase power to run industrial tools such as plasma cutters, pumps, or inverter welders.


  • Next-Gen Display – Bright, durable 7 in. digital user interface for unmatched machine control - Save and recall memories, receive maintenance reminders, and enable PIN authorization.


  • CrossLinc® Enabled – Allows communication through a standard weld cable to enable voltage or current control at the arc without a control cable to help improve safety, quality, and productivity with less trips to the power source and reduced jobsite clutter. Built-in True Voltage Technology™ (TVT) compensates for voltage drop to further improve operations.


  • Run Longer and More Efficient – Weld longer with a class-leading 20 US gal. (75.7 L) fuel tank and integrated Auto-Stop/Start feature, designed to prevent excessive idling to help save on fuel costs, avoid unnecessary engine wear, and extend time between required maintenance.


  • Field-Proven Diesel Engine – Powered by a 24.7 hp, turbocharged Perkins® diesel engine to provide extremely smooth and quiet operation with excellent cold-weather starting and high altitude performance while meeting EPA Tier 4 Final compliance.


  • Trusted Reliability – Engineered tough to withstand harsh conditions and backed by trusted industry support and 3-year warranty.

Product Weights & Dimensions

Dimensions (H x W x D) 35.9 in x 25.3 in x 60 in (913 mm x 643 mm x 1524 mm)
Net Weight 1035 lbs (469 kg)


Machines Processes Stick (SMAW)
Gouging (CAC-A)
Pulsed MIG (GMAW-P)
Flux-Cored Self-Shielded (FCAW-S)
Flux-Cored Gas-Shielded (FCAW-G)
Orbital MIG
IEC Rating 325A / 33V / 100% @ 104°F (40°C)
Max Rating 400A / 26V / 60% @ 104°F (40°C)
Output Range by Mode Stick (SMAW): 30 – 400 Amps
CV-Wire (GMAW, FCAW-S, FCAW-G): 10 – 45 Volts
DC TIG (GTAW): 5 – 400 Amps
Arc Gouging (CAC-A): 60 – 400 Amps
Open Circuit Voltage 71 Peak OCV at 1800 RPM
Rated Gouging Carbon Diameter 5/16" (8.0 mm)
Machines Communication Technology CrossLinc

Engine Driven Welders

Single Phase Auxiliary Output 10,000 Watts Continuous / 11,500 Watts Peak, 120/240V
Three Phase Auxiliary Output 11,000 Watts Continuous / 12,500 Watts Peak, 240V
Auxiliary Output Frequency 60 Hz
Receptacle Types NEMA 5-20R
NEMA 14-50R
NEMA 15-50R
Engine Brand & Model Perkins® 403F-15T
Engine Description 3 Cylinder Turbocharged Water Cooled Diesel Engine
Engine Horsepower 24.7 hp (18.4 kW)
Engine Block Size & Displacement 91 cu. in (1.5 L), Bore x Stroke - 3.3 in x 3.5 in (84 mm x 90 mm)
Emissions Rating US EPA Tier 4 Final
High Idle Operating Speed @ Rated Output 1800
Low Idle Operating Speed 1440
Sound Rating @23 ft. (7m) 67 dB at Low Idle, 71 dB at High Idle
Fuel Tank Size (US gal.) 20 US gal.
Fuel Tank Size (L) 75.7 L
Oil Capacity (qts.) 6.4 qts.
Oil Capacity (L) 6.0 L
Coolant Capacity (US gal.) 1.8 US gal.
Coolant Capacity (L) 6.8 L


Typical Application Construction
Railroad Maintenance
Cross Country Pipeline
Construction & Field Erection
Maintenance & Repair
Oil & Gas
Power Generation
Structural Fabrication
Structural Welding


Warranty 3 Years Parts and Labor - Engine warranted separately by engine manufacturer
  • Machine Only.